Why won't my TCCD do 1T at any decent fsb?

[charloscarlies]

Like the title says.

This stick does 270+ at 2.5-3-3 at 2T, but it won't even do 230 at the same timings w/ 1T command rate. What's the deal? I've tried 2.6-2.9 volts makes no difference. It does do 2-2-2 at 200 w/ 2.7 volts memtest stable so I don't think it's just a bad stick. This is the second one I've tried that won't do high fsb w/ 1T.

I'm starting to wonder if the memory is even the cause. The chip is a CG and the mobo is a VNF3-250 w/ 9/21 bios.

Any ideas?

 

[acivick]

Are you using 2 double sided sticks? If so, 230 is probably the upper limit on that board/processor w/ a 1T command rate.

 

[charloscarlies]

Originally posted by: acivick
Are you using 2 double sided sticks? If so, 230 is probably the upper limit on that board/processor w/ a 1T command rate.

Nope just one stick of 512.

 

[imported_Computer MAn]

I think he meant does your stick have modules on both sides.

 

[imported_whatever]

Originally posted by: Computer MAn
I think he meant does your stick have modules on both sides.

he meant did he have 2 sticks with modules on both sides
it is most likely a double sided stick. i know my friend's 754 board wont do any decent clocks/timings with 512MB sticks, so i would guess it is not the ram.

 

[charloscarlies]

Originally posted by: whatever

Originally posted by: Computer MAn
I think he meant does your stick have modules on both sides.

he meant did he have 2 sticks with modules on both sides
it is most likely a double sided stick. i know my friend's 754 board wont do any decent clocks/timings with 512MB sticks, so i would guess it is not the ram.

That's what I'm thinking. And yes it is a double-sided stick, but only one.

 

[imported_Computer MAn]

Oops sorry didn't read his post carefully enough

 

[acivick]

Hmm, are you using SATA drives?

 

[charloscarlies]

Originally posted by: acivick
Hmm, are you using SATA drives?

Yes I thought about that actually. Does the SATA not lock on this board or something?

 

[Shimmishim]

some of the nforce3 boards... well nforce3 150 boards didn't have pci lock so SATA drives really limited the overclock...

i'm not too familiar with the vnf3-250 by chaintech right? how many sata ports does it have and what controls them?

i'd say it might be a SATA issue as well... you have a PATA drive lying around or a pci SATA card?

 

[imported_Computer MAn]

I now on the Lanparty you have to use I believe SATA 3 and 4 for high FSB OC's. Like Shimmishim said check how many ports that board has.

 

[charloscarlies]

Originally posted by: Shimmishim
some of the nforce3 boards... well nforce3 150 boards didn't have pci lock so SATA drives really limited the overclock...

i'm not too familiar with the vnf3-250 by chaintech right? how many sata ports does it have and what controls them?

i'd say it might be a SATA issue as well... you have a PATA drive lying around or a pci SATA card?

Yeah I do. Might have to give it a try. I'm gonna be pissed if I can't use my Raptor. :|

 

[acivick]

I *think* the VNF has 4 SATA ports, though I might be wrong. If so, switch the drive(s) to the other 2. Otherwise you might be SOL with SATA drives.

 

[charloscarlies]

Originally posted by: acivick
I *think* the VNF has 4 SATA ports, though I might be wrong. If so, switch the drive(s) to the other 2. Otherwise you might be SOL with SATA drives.

Thanks I'll give that a try. I don't think the SATA is the problem though because it does 250 at 2T. The only problem I'm having is when trying to run it at 1T.

 

[Rhoel]

charloscarlies,
I have the same cpu/mb combo as you do, and I can't do 1t either. By the way, I don't have sata drives either. Out of curiousity, how much of a performance hit is it?

 

[acivick]

From what I've read, you would need to increase the FSB by ~15MHz when on 2T to equal the performance benefit of setting the memory to 1T. Of course YMMV, so the best way to find out is to do some benchmarking.

 

[charloscarlies]

Originally posted by: Rhoel
charloscarlies,
I have the same cpu/mb combo as you do, and I can't do 1t either. By the way, I don't have sata drives either. Out of curiousity, how much of a performance hit is it?

I ran SuperPI at 250 2.5-3-3-6 @ 2T and it makes a HUGE difference. I think I went from 37/38 seconds to 43/44.

1T definitely makes a huge difference with the A64's.

I wonder if this board just doesn't like 1T at high fsb?

 

[Shimmishim]

it's possible... have you tried a beta bios or anything?

visit xtremesystems.org and see what you can find on this board!